Both steps have to be processed as a logical unit of work, and failure in one of the services will result in a failure message to the user.
这两步都必须处理为一个逻辑工作单元(即事务)，其中任何一个服务的失败都会向用户发送失败的信息。
2
A message set is a group of messages that need to be treated together as one atomic unit during a reorder operation.
消息集合(Message set)是一组需要在重排操作期间作为一组原始单元处理的消息。
3
Using some telecommunication or data access methods, a message can be the unit of information or data that is transmitted from one program or user to another.